6486666 has 16 divisors (see below), whose sum is σ = 13024800. Its totient is φ = 2153648.

The previous prime is 6486653. The next prime is 6486671. The reversal of 6486666 is 6666846.

6486666 is a modest number, since divided by 6666 gives 648 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396 + ... + 3623.

It is an arithmetic number, because the mean of its divisors is an integer number (814050).

Almost surely, 2^6486666 is an apocalyptic number.

6486666 is an abundant number, since it is smaller than the sum of its proper divisors (6538134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6486666 is a wasteful number, since it uses less digits than its factorization.

6486666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293.

The product of its digits is 248832, while the sum is 42.

The square root of 6486666 is about 2546.8934017740. The cubic root of 6486666 is about 186.4978568804.

The spelling of 6486666 in words is "six million, four hundred eighty-six thousand, six hundred sixty-six".